16664374929 has 16 divisors (see below), whose sum is σ = 23290432704. Its totient is φ = 10586553600.

The previous prime is 16664374921. The next prime is 16664374931. The reversal of 16664374929 is 92947346661.

It is a happy number.

It is not a de Polignac number, because 16664374929 - 2³ = 16664374921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16664374921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1570092 + ... + 1580669.

It is an arithmetic number, because the mean of its divisors is an integer number (1455652044).

Almost surely, 2^16664374929 is an apocalyptic number.

It is an amenable number.

16664374929 is a deficient number, since it is larger than the sum of its proper divisors (6626057775).

16664374929 is a wasteful number, since it uses less digits than its factorization.

16664374929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150848.

The product of its digits is 11757312, while the sum is 57.

The spelling of 16664374929 in words is "sixteen billion, six hundred sixty-four million, three hundred seventy-four thousand, nine hundred twenty-nine".